SPPU Civil Engineering (Semester 6)
Environmental Engineering I
May 2017
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary


Solve any one question from Q.1(a,b) &Q.2(a,b)
1(a) Explain in short differente methods for removing particulate matters.
6 M
1(b) Discuss the sources and effects of noise pollution.
4 M

2(a) Convert the following sound pressure into decibel units.
i) P = 0.0002 microbar
ii) P = 0.2 microbar
iii) P = 20,000 microbar
6 M
2(b) Explain the factors affecting the rate of demand.
4 M

Solve any one question from Q.3(a,b) &Q.4(a,b)
3(a) explain with neat sketch the working, location and function of river and canal intake.
6 M
3(b) Write a brief note on Aeration in water treatment.
4 M

4(a) Explai type I and type II settling. What are the various types of plain sedimentation basins? Explain any one type of basin with a neat sketch.
6 M
4(b) On what factors the dose of coagulants depends? How the optimum coagulant does is determined?
4 M

Solve any one question from Q.5(a,b) &Q.6(a,b)
5(a) Alum dose of 20 mg/lit is applied to treat 15 MLD of water. Find
i) Quantity of alum required per day and
ii) Amount of CO2 released.
6 M
5(b) Compare slow sand and rapid sand filter with refernce to
i) Rate of filtration,
ii) Filter media-Effective size and unifomity coefficient of sand,
iii) Period and method of cleaning,
iv) Loss of head and
v) Quantity of wash water.
10 M

6(a) Explain in detail, the working of a circular clariflocculator. Draw the typical cross-section of a circular clariflocculator, showing various components.
8 M
6(b) Write a note on:
i) Roughening filter and double filtration
ii) Multimedia and dual media filters
8 M

Solve any one question from Q.7(a,b) &Q.8(a,b)
7(a) What are the functions of Elevated Service Reservoir? Draw a sketch of intze type tank.
8 M
7(b) What is desalindation? What are the different methods?
8 M

8(a) Write short note on:
i) Chloramines
ii) Effect of pH on chlorination
iii) plain chlorination
iv) Post chlorination
v) Super chlorination
10 M
8(b) Write a short note on fluoridation and defluroidation.
8 M

Solve any one question from Q.9(a,b) &Q.10(a,b)
9(a) Write a short note on:
i) Mass curve method
ii) Capacity of service reservoir.
9 M
9(b) Differentiate between fire reserve and break down reserve.
9 M

10(a) What is packaged water treatment plant? What are the advantages of packaged water treatment plant?
9 M
10(b) Explain zeolite process in detail with a neat sketch.
9 M



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